USPTO Patents Application 10579344

WO 2005/049737

17

PCT/EP2004/012788

What is claimed is:

1) A pigment composition comprising a disazo pigment of formula (I),

and one or more pigments from the group of the organic orange, red and violet
pigments.

2) The pigment composition according to claim 1 wherein the organic orange
pigment is C.I. Pigment Orange 5, 13, 14, 16, 34, 36, 38, 42, 43, 48, 49, 51, 61,
62, 64, 67, 68, 69, 71, 72, 73, 74; or a combination thereof.

3) A pigment composition according to claim 1 wherein the organic red
pigment is C.I. Pigment Red 1, 2, 3, 4, 5, 7, 9, 12, 14, 23, 38, 41, 42, 48, 48:1,
48:2, 48:3, 48:4, 48:5, 48:6, 49, 49:1, 51:1, 52:1, 52:2, 53, 53:1, 53:3, 57, 57:1,
57:2, 57:3, 58:2, 58:4, 63:1, 81, 81:1, 81:2, 81:3, 81:4, 81:5, 81:6, 88, 112, 122,
123, 144, 146, 148, 149, 150, 166, 168, 169, 170, 175, 176, 177, 178, 179, 184,
185, 187, 188, 190, 192, 194, 200, 200:1, 202, 206, 207, 208, 209, 210, 214, 216,
220, 221, 224, 242, 246, 247, 251, 253, 254, 255, 256, 257, 260, 262, 264, 270,
272;

or a combination thereof.

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(i)

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4) The pigment composition according to claim 1 wherein the organic violet
pigment is C.I. Pigment Violet 19.

WO 2005/049737 18 PCT/EP2004/012788

5) The pigment composition according to at least one of claims 1 to 4 wherein
the weight ratio of disazo pigment of formula (I) to organic orange, red or violet
pigment is in the range from (0.1:99.9) to (99.9:0.1).

6) The pigment composition according to at least one of claims 1 to 5 wherein
the weight ratio of disazo pigment of formula (I) to organic orange, red or violet
pigment is in the range from (10:90) to (90:10).

7) The pigment composition according to at least one of claims 1 to 6 which is
a solid solution or mixed crystal.

8) The process for producing a pigment composition according to at least one
of claims 1 to 6 by mixing the disazo pigment of the formula (I) with the organic
orange, red or violet pigment or pigments.

9) The use of a pigment composition according to one or more of claims 1 to 7
for pigmentation of macromolecular organic materials, for example for pigmenta-
tion of plastics, resins, coatings, paints, electrophotographic toners and
developers, electret materials, color filters and also of inks, including printing inks,
including ink jet inks, and seed.

10) A macromolecular organic medium comprising a coloristically effective
amount of a pigment composition according to one or more of claims 1 to 7.